7284820 has 12 divisors (see below), whose sum is σ = 15298164. Its totient is φ = 2913920.

The previous prime is 7284817. The next prime is 7284821. The reversal of 7284820 is 284827.

7284820 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 2 ways, for example, as 4813636 + 2471184 = 2194^2 + 1572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7284821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182101 + ... + 182140.

It is an arithmetic number, because the mean of its divisors is an integer number (1274847).

Almost surely, 2^7284820 is an apocalyptic number.

It is an amenable number.

7284820 is an abundant number, since it is smaller than the sum of its proper divisors (8013344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7284820 is a wasteful number, since it uses less digits than its factorization.

7284820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364250 (or 364248 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 7284820 is about 2699.0405702768. The cubic root of 7284820 is about 193.8531854114.

The spelling of 7284820 in words is "seven million, two hundred eighty-four thousand, eight hundred twenty".